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Pen y Ddinas Camp is a prehistoric hillfort situated on Lower Cambrian bedrock comprising interbedded sandstone and conglomerate. The underlying geology dates to the Early Cambrian period and provided a stable foundation for the defensive earthworks that crown this upland site. The hard stone substrate would have influenced both the construction techniques employed by its builders and the character of the fort's surviving features today.
Hillforts of this type typically date to the Iron Age, when such fortified settlements served as centres of power, refuge and storage across Britain and beyond. Pen y Ddinas Camp follows the common pattern of hillforts sited on prominent topography, exploiting natural elevation to command the surrounding landscape and provide defensive advantage. The fort's position on the Cambrian bedrock places it within an ancient geological zone that characterises much of upland Wales.
The monument is protected by Cadw, the Welsh heritage body responsible for safeguarding the nation's archaeological and historical sites. This designation recognises Pen y Ddinas Camp's significance as evidence of prehistoric settlement and social organisation in Wales. The hillfort remains an important landmark in the archaeological record of the region, reflecting the enduring human use of upland territories during the pre-Roman Iron Age.
Pen y Ddinas Camp is a scheduled monument protected by Cadw under reference ME076. View the official record →
Pen y Ddinas Camp is a prehistoric hillfort situated on Lower Cambrian bedrock comprising interbedded sandstone and conglomerate. It is designated a Scheduled Ancient Monument by Cadw under reference ME076.
Pen y Ddinas Camp dates from the prehistoric period, and is classified as a hillfort. It is one of over 32,000 scheduled monuments protected across the UK.
Pen y Ddinas Camp is a Scheduled Ancient Monument, legally protected by Cadw — the body responsible for designating and safeguarding heritage sites in Wales. The official designation reference is ME076.
Several scheduled monuments lie within 10 km, including Cyfannedd-Fach Homestead (8.4 km), Fairbourne Anti-invasion Defences (8.5 km), Bron-Llety-Ifan cairns and cup-marked rock (8.6 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Pen y Ddinas Camp's history, each drawn from the record and mapped to the exact spot:
Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.
Pen y Ddinas Camp stands on Lower Cambrian Rocks (Undifferentiated), bedrock that formed in the Early Cambrian. The rock here is sandstone and conglomerate, interbedded.